MONOGRAPHIA POLYGALACEARUM. 137 
Var. leptostachya v. n. 
Racemi elongati, sub maturitatem graciles, apice, 3-4 mm. lati. Appendi- 
cula ‘}, sem. æquantia. Varietas facile distinguenda racemis filiformibus. Exsee : 
Berlandier, de Béjar à Austin, Mexico, 1828, n° 1768. 
Obs. In hac specie folia infima verticillata, sæpius non bene appareant vel 
cadunt, quo fit ut folia omnia alterna videntur, ob talem characterem etsi fugacem 
ad sectionem verticillataram planta juxta P. Boykini Nutt. quacum characteribus 
internis congruit collocanda. 
Var. mexicana : petala superiora lanceolata angustiora quam in spec. typic. 
Var. Schaffneri : humilis diffusa, caulibus angulosis. 
Folia fere omnia verticillata (5) superiora alterna, inferiora obovata vel obovato- 
lanceolata vel lanceolata, superiora lanceolato-linearia ‘/,., ‘/,,, ‘°},, ‘‘/, mm., 
acuta vel apice breviter apiculata, glabra. Flores rosei. Capsula elliptica, alis 
paulo brevior. 
Varietas aliis ob folia latiora et verticillata dissimilis, sed characteribus internis 
normalis. Alæ sunt longiores quam corolla, petala superiora lanceolata et sepala 
exteriora juventute apice subciliata. 
Schaffner, leg. in Mexico ex convalli San Luis Potosi, n° 477, anno 1879 (in 
Hb. Berol.). 
P. BOYKINI, Nutt. 
Radix perpendicularis; caules plures erecti, rigidi subangulate striati, simplices 
vel rarius parce ramosi; folia 5-verticiliata, lanceolata vel obovato-lanceolata, 
internodiis multo breviores; racemi longe pedunculati, spiciformes, elongati; 
sepala exteriora inæqualia; alæ orbiculares subunguiculatæ, nervis pluribus haud 
anastomosantibus notatæ, corollam æquantes; petala superiora rhomboidalia, 
obtusa; antheræ quam filamenta haud longiores ; stigma superius cristatum ; capsula 
obovato-elliptica, semina subeurvata, pilis appressis vestita; appendicula ‘/,semen 
subæquantia. 
Nutt. ! in Journ. Acad. Philad. 7, p. 86; Torr. et Gray, FI. p. 131 et 670. 
P. bicolor Vorr et Gray, F1. 4. 130 non HB.K. 
Tab. nostra. XX, fig. 15-—16. 
Curtiss : 605. 
TOME XXXI, 2° PART. 18 
